<script setup>
import courseApi from "@/api/course.js";
import {ref} from "vue";
import {ElMessage, ElMessageBox} from "element-plus";
import {Delete, Download, Plus, Upload} from '@element-plus/icons-vue'
import router from "@/router/index.js";
import coachApi from "@/api/coach.js";
//数据表格
const list = ref([])
const total = ref(0)
//分页信息和搜索条件
const courseQuery = ref({
  name: '',
  coachId: '',
  page: 1,
  limit: 10
})

/*courseApi.list(courseQuery.value).then(result => {
    list.value = result.data.records
    total.value = result.data.total
})*/

const loadData = () => {
  courseApi.list(courseQuery.value).then(result => {
    if (result.code == 0) {
      list.value = result.data.records
      total.value = result.data.total
    }
  })
}

loadData()

const onSearch = () => {
  courseQuery.value.page = 1
  loadData()
}

const reset = () => {
  courseQuery.value.name = ''
  courseQuery.value.coachId = ''
  courseQuery.value.beginUpdateTime = null
  courseQuery.value.endUpdateTime = null


}

//根据id删除
const deleteById = (id) => {
  ElMessageBox.confirm(
      '您确认要删除么?',
      '警告',
      {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning',
      }
  ).then(() => {
    courseApi.deleteById(id).then(result => {
      if (result.code == 0) {
        ElMessage.success(result.msg)
        loadData()
      } else {
        ElMessage.error(result.msg)
      }
    })
  })
}

//批量删除
const ids = ref([])
const handleSelectionChange = (rows) => {
  console.log('多选', rows)
  ids.value = rows.map(function (row) {
    return row.id;
  })
  console.log(ids.value)
}

const deleteAll = () => {
  ElMessageBox.confirm(
      '您确认要删除么?',
      '警告',
      {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning',
      }
  ).then(() => {
    courseApi.deleteAll(ids.value).then(result => {
      if (result.code == 0) {
        ElMessage.success(result.msg)
        loadData()
      } else {
        ElMessage.error(result.msg)
      }
    })
  })
}

//添加、编辑
const dialogFormVisible = ref(false)
const course = ref({
  length: 1,
  maxCount: 5
})
const showAddDialog = () => {
  course.value = {
    length: 1,
    maxCount: 5
  }
  dialogFormVisible.value = true
}

const showUpdateDialog = (id) => {
  dialogFormVisible.value = true
  course.value = {
    length: 1,
    maxCount: 5
  }
  courseApi.selectById(id).then(result => {
    if (result.code == 0) {
      course.value = result.data
    }
  })
}

const addOrUpdate = () => {
  if (course.value.id) {
    courseApi.update(course.value).then(result => {
      if (result.code == 0) {
        ElMessage.success(result.msg)
        dialogFormVisible.value = false
        loadData()
      } else {
        ElMessage.error(result.msg)
      }
    })
  } else {
    courseApi.add(course.value).then(result => {
      if (result.code == 0) {
        ElMessage.success(result.msg)
        dialogFormVisible.value = false
        loadData()
      } else {
        ElMessage.error(result.msg)
      }
    })
  }
}


//el-switch状态切换
const handleSwitchChange = (row) => {
  console.log(row)
  const course = {}
  course.id = row.id
  course.status = row.status
  courseApi.update(course).then(result => {
    if (result.code == 0) {
      ElMessage.success(result.msg)
    } else {
      ElMessage.error(result.msg)
    }
  })
  /*courseApi.updateStatus(row.id, row.status).then(result => {
      if (result.code == 0) {
          ElMessage.success(result.msg)
      } else {
          ElMessage.error(result.msg)
      }
  })*/
}

//图片上传
const handleAvatarSuccess = (result) => {
  course.value.image = result.data
}

import {useTokenStore} from '@/store/token.js'
import coach from "@/api/coach.js";

const tokenStore = useTokenStore();
const headers = ref({
  //携带token传递到后端
  Authorization: tokenStore.token
});


//查找所有的教练
const coachList = ref([])
coachApi.selectAll().then(result => {
  if (result.code == 0) {
    coachList.value = result.data
  }
})

//下拉事件
const selectChange = (value) => {
  console.log(value)
}

//导入、导出excel
const exportExcel = () => {
  courseApi.exportExcel().then((result) => {
    let blob = new Blob([result], {type: "application/xlsx"});
    let url = window.URL.createObjectURL(blob);
    const link = document.createElement("a"); // 创建a标签
    link.href = url;
    link.download = "课程列表.xlsx"; // 重命名文件
    link.click();
    URL.revokeObjectURL(url);
  });
}

const importExcelSuccess = (result) => {
  //if (result.code == 0) {
  ElMessage.success(result.msg)
  loadData()
  //}
}
</script>

<template>
  <el-card class="">
    <template #header>
      <div class="header">
        <el-button type="success" :icon="Plus" @click="showAddDialog">添加</el-button>
        <el-button type="danger" :icon="Delete" @click="deleteAll">批量删除</el-button>
        <el-button type="primary" :icon="Download" @click="exportExcel">导出Excel</el-button>
        <el-upload
            :icon="Upload"
            class="inline-block"
            multiple=""
            method="post"
            action="/api/course/importExcel"
            style="display:inline-block;margin-left: 12px"
            accept=".xlsx,.xls"
            :show-file-list="false"
            :on-success="importExcelSuccess"
            :headers="headers"
            name="file">
          <el-button type="primary" :icon="Upload">导入Excel</el-button>
        </el-upload>
      </div>
    </template>
    <el-form :inline="true">
      <el-form-item label="名字">
        <el-input v-model="courseQuery.name" placeholder="请输入名字" clearable style="width: 200px"/>
      </el-form-item>
      <el-form-item label="教练">
        <el-select @change="selectChange" v-model="courseQuery.coachId" clearable placeholder="请选择教练"
                   style="width: 240px">
          <el-option
              v-for="coach in coachList"
              :key="coach.id"
              :label="coach.name"
              :value="coach.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="更新时间" :label-width="100">
        <el-date-picker
            v-model="courseQuery.beginUpdateTime"
            type="datetime"
            value-format="YYYY-MM-DD HH:mm:ss"
            placeholder="开始时间"
        />
        <el-date-picker
            v-model="courseQuery.endUpdateTime"
            type="datetime"
            value-format="YYYY-MM-DD HH:mm:ss"
            placeholder="结束时间"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="onSearch">搜索</el-button>
        <el-button type="warning" @click="reset">重置</el-button>
      </el-form-item>
    </el-form>
    <el-table :data="list" style="width: 100%" ref="multipleTableRef" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55"/>
      <el-table-column fixed prop="id" label="ID"/>
      <el-table-column prop="name" label="名字"/>
      <el-table-column prop="coachId" label="教练ID"/>
      <el-table-column prop="coachName" label="教练"/>
      <el-table-column prop="time" label="课程时间" width="180"/>
      <el-table-column prop="length" label="课程时长"/>
      <el-table-column prop="maxCount" label="最大人数"/>
      <el-table-column prop="room" label="教室"/>
<!--      <el-table-column prop="status" label="状态">
        <template #default="scope">
          <el-switch
              v-model="scope.row.status"
              style="&#45;&#45;el-switch-on-color: #13ce66; &#45;&#45;el-switch-off-color: #ff4949"
              :active-value="1"
              :inactive-value="0"
              @change="handleSwitchChange(scope.row)"
          />
        </template>
      </el-table-column>-->
      <el-table-column prop="image" label="头像">
        <template #default="{ row }">
          <img :src="row.image" style="max-height: 40px; max-width: 120px;"/>
        </template>
      </el-table-column>
      <!-- <el-table-column prop="avatar" label="头像"/> -->
      <el-table-column prop="updateTime" label="更新时间" width="180px"/>
      <el-table-column align="center" width="200px" fixed="right" label="操作">
        <template #default="{ row }">
          <el-button size="small" type="primary" @click="showUpdateDialog(row.id)">编辑</el-button>
          <el-button size="small" type="danger" @click="deleteById(row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-pagination
        v-model:current-page="courseQuery.page"
        v-model:page-size="courseQuery.limit"
        :page-sizes="[10, 20, 30, 40]"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        @change="loadData"
        style="margin-top: 20px; justify-content: flex-end"
    />
  </el-card>

  <!--添加、编辑弹出框-->
  <el-dialog v-model="dialogFormVisible" :title="title" width="60%" :lock-scroll="false">
    <el-form :model="course">
      <el-form-item label="名字" :label-width="80">
        <el-input v-model="course.name" autocomplete="off"/>
      </el-form-item>
      <el-form-item label="教练" :label-width="80">
        <el-select v-model="course.coachId" placeholder="请选择教练" style="width: 240px">
          <el-option
              v-for="coach in coachList"
              :key="coach.id"
              :label="coach.name"
              :value="coach.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="开始时间" :label-width="80">
        <el-date-picker
            v-model="course.time"
            type="datetime"
            value-format="YYYY-MM-DD HH:mm:ss"
            placeholder="开始时间"
        />
      </el-form-item>
      <el-form-item label="课程时长" :label-width="80">
        <el-input-number :min="1" :max="100" :step="1" v-model="course.length" autocomplete="off"/>
      </el-form-item>
      <el-form-item label="教室" :label-width="80">
        <el-input v-model="course.room" autocomplete="off"/>
      </el-form-item>
      <el-form-item label="最大人数" :label-width="80">
        <el-input-number :min="5" :max="120" :step="5" v-model="course.maxCount" autocomplete="off"/>
      </el-form-item>
      <el-form-item label="封面" :label-width="80">
        <el-upload
            class="avatar-uploader"
            action="/api/upload"
            :show-file-list="false"
            :on-success="handleAvatarSuccess"
            :headers="headers"
        >
          <img v-if="course.image" :src="course.image" class="avatar"/>
          <el-icon v-else class="avatar-uploader-icon">
            <Plus/>
          </el-icon>
        </el-upload>
      </el-form-item>
    </el-form>
    <template #footer>
      <div class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取消</el-button>
        <el-button type="primary" @click="addOrUpdate">
          确认
        </el-button>
      </div>
    </template>
  </el-dialog>
</template>

<style scoped>
.avatar-uploader .avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed var(--el-border-color);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
  border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  text-align: center;
}
</style>